angular-ui/bootstrap：测试使用对话框的控制器

Question

我有一个控制器，它使用来自 angular-ui/bootstrap 的对话框：

   function ClientFeatureController($dialog, $scope, ClientFeature, Country, FeatureService) {

        //Get list of client features for selected client (that is set in ClientController)
        $scope.clientFeatures = ClientFeature.query({clientId: $scope.selected.client.id}, function () {
            console.log('getting clientfeatures for clientid: ' + $scope.selected.client.id);
            console.log($scope.clientFeatures);
        });

        //Selected ClientFeature
        $scope.selectedClientFeature = {};

        /**
         * Edit selected clientFeature.
         * @param clientFeature
         */
        $scope.editClientFeature = function (clientFeature) {
            //set selectedClientFeature for data binding
            $scope.selectedClientFeature = clientFeature;

            var dialogOpts = {
                templateUrl: 'partials/clients/dialogs/clientfeature-edit.html',
                controller: 'EditClientFeatureController',
                resolve: {selectedClientFeature: function () {
                    return clientFeature;
                } }
            };
            //open dialog box
            $dialog.dialog(dialogOpts).open().then(function (result) {
                if (result) {
                    $scope.selectedClientFeature = result;
                    $scope.selectedClientFeature.$save({clientId: $scope.selectedClientFeature.client.id}, function (data, headers) {
                        console.log('saved.');
                    }, null);
                }
            });
        };
    });

我对测试几乎完全陌生，并认为我可能需要测试两件事：

1. 调用 $scope.editClientFeature() 时会打开一个对话框
2. 在对话框关闭后成功调用 $save 并返回“结果”

我真正搞砸的测试现在看起来像这样：

describe('ClientFeatureController', function () {
    var scope, $dialog, provider;

    beforeEach(function () {
            inject(function ($controller, $httpBackend, $rootScope, _$dialog_) {
            scope = $rootScope;
            $dialog = _$dialog_;

            //mock client
            scope.selected = {};
            scope.selected.client = {
                id: 23805
            };

            $httpBackend.whenGET('http://localhost:3001/client/' + scope.selected.client.id + '/clientfeatures').respond(mockClientFeatures);
            $controller('ClientFeatureController', {$scope: scope});
            $httpBackend.flush();
        });
    });


    it('should inject dialog service from angular-ui-bootstrap module', function () {
        expect($dialog).toBeDefined();
        console.log($dialog); //{}
    });

    var dialog;

    var createDialog = function (opts) {
        dialog = $dialog.dialog(opts);
    };

    describe('when editing a clientfeature', function () {
        createDialog({});
        console.log(dialog); //undefined
//        var res;
//        var d;
//        beforeEach(function () {
//            var dialogOpts = {
//                template: '<div>dummy template</div>'
//            };
//            console.log(dialog);
//            d = $dialog.dialog(dialogOpts);
//            d.open();
//        });
//
//        it('should open a dialog when editing a client feature', function () {
//            expect(d.isOpen()).toBe(true);
//        });
    });

});

现在的直接问题是我无法创建/打开对话框。我收到以下错误：

Chrome 25.0 (Mac) ClientFeatureController when editing a clientfeature encountered a declaration exception FAILED
    TypeError: Cannot call method 'dialog' of undefined

如果有人已经为类似的用例编写了测试并且可以为我提供一个示例，那就太好了，因为我很迷茫。

谢谢， 肖恩

Answer 1

直到现在，我一直在为同样的问题苦苦挣扎，在浏览了 github 存储库之后，我找到了对话测试并将其用作起点：

var $dialog,$scope,$httpBackend;
  beforeEach(module('ui.bootstrap.dialog'));
  beforeEach(function(){
    inject(function (_$dialog_, _$httpBackend_, $controller){
      $dialog = _$dialog_;
      $httpBackend = _$httpBackend_;
      $httpBackend.expectGET('/appServer/list')
        .respond([{
            id:1,
            name:'test1'
          },
          {
            id:2,
            name:'test2'
          },
          {
            id:3,
            name:'test3'
          }]);


      //setup controller scope
      scope = {};
      ServerCtrl = $controller('ServerCtrl', {
        $scope: scope,
        $dialog:$dialog
      });
    });
  });

Answer 2

我也更喜欢适当的模拟。当它不可用时，我会修补服务

对此进行测试：

$dialog.messageBox(title, msg, btns)
   .open()
   .then(function (result) {
       if (result == 'ok') {
            // block executed if user click OK
       }
});

你可以像这样修补 $dialog：

$dialog.messageBox = function (title, msg, btns) {
    return {
        open: function () {
            return {
                 then: function (callback) {
                      callback('ok'); // 'ok' will be set to param result
                 }
             }
        }
    }
 };

Answer 3

我个人尝试模拟所有服务。如果 ui-bootstrap 项目没有提供 $dialog 模拟，你应该在那里打开一个 bug 票并要求他们提供一个。然而，创建一个同样容易。

模拟服务应该有虚假的方法，除了返回承诺之外什么都不做。它还应该为您提供一种刷新所有异步方法的方法，以便更轻松地进行同步测试。

Answer 4

我发现编写自己的对话框模拟是最清晰的。这是一个模拟对话框以模拟选择“是”的示例。

被测代码

.controller('AdminListingCtrl', function AdminListingController($scope, $dialog, houseRepository) {
    $scope.houses = houseRepository.query();
    $scope.remove = function (house) {
        var dlg = $dialog.messageBox('Delete house', 'Are you sure?', [
            {label: 'Yep', result: 'yes'},
            {label: 'Nope', result: 'no'}
        ]);
        dlg.open().then(function (result) {
            if (result == 'yes') {
                houseRepository.remove(house.id);
                $scope.houses = houseRepository.query();
            }
        });
    };
}

测试

    describe('when deleting a house', function () {

        var fakeDialog = {
            open: function()
            {
                return {
                    then: function(callback) {
                        callback("yes");
                    }
                };
            }
        };

        beforeEach(inject(function($dialog) {
            spyOn($dialog, 'messageBox').andReturn(fakeDialog);
        }));

        it('should call the remove method on the houseRepository', function () {
            scope.remove({id: 99});
            expect(houseRepository.remove).toHaveBeenCalledWith(99);
        });

        // etc
    });